Therefore, one of the 4s 2 electrons of the Copper (Cu) atom jumps to the 3d 9 to achieve a fully -filled 3d orbital. However, half– filled or fully-filled orbitals are more stable due to the symmetrical distribution of electrons. Ans :- The electronic configuration of Cu having 29 atomic number is : Cu (Z29) : 1s22s22p63s23p64s13d10 This electronic configuration is exceptional. The expected electronic configuration of Copper (Cu): 1s 22s 22p 63s 23p 6 4s 23d 9 Thus, the expected electronic configuration of Copper (Cu) will be as follows: By following the same rule of the Aufbau Principle, within the remaining 11 electrons, two electrons are placed in the 4s orbital, and 9 electrons are placed in the 3d orbital.Further, the next 6 electrons will go to the 3p orbital.Then, the next two electrons go in the 3s.And, the next 6 electrons for Copper (Cu) will go to the 2p orbital.Then, the next two electrons for Copper (Cu) occupy the 2s orbital.According to Aufbau Principle, the first two electrons of Copper (Cu) are filled in 1s orbital.According to Aufbau Principle, “the orbitals are filled up with electrons in order of their increasing energy, i.e., orbital of lowest energy are filled up first, and those with the highest energy are filled up at the end.” The order of the orbital occupancy is shown in the following diagram. Ground State Electron Configuration : The ground state electron. So, let’s start writing the electronic configuration of Copper (Cu) based on the Aufbau Principle. The ground state electron configuration for copper is Ar3d104s1 A r 3 d 10 4 s 1. Electronic Configuration of Copper Electronic Configuration of Copper Atom (Cu) (Atomic Number 29) This article explains the Electronic Configuration of Copper and how to write the Electronic Configuration of Copper atom (Cu).
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